The same reason they likely cannot deliver a nuke! Too much inbreeding!
A friend of mine spent some of her youth in that area.
She said the main difference was that in Pakistan if a brick fell out of a wall, they’d shrug and say “It’s God’s will.”, in India if a brick fell out of a wall they’d shrug and say “It’s the will of the Gods”, BUT THEY’D PUT THE BRICK BACK!